Menu

Flexural Strength Testing

All materials are cut into 2" wide by 24" long strips. Ten strips are cut with the grain in the 24" direction, and ten are cut with the grain in the 2" direction (cross grain). The strips are supported 1" in from the end on the bottom and deflected in the center of the top. 2" Wide numbers are measured with the strip standing on edge. The other numbers are measured with the strip laying flat. The pressure needed to break the test strip is displayed on a digital readout and recorded. All measurements are in pounds.


  • Material
  • With Grain
  • With Grain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 7/8" Ply Frame
  • 433.0
  • 660.0
  • 280.0
  • 518.0
  • 7/8" CCX Pine
  • 369.5
  • 508.5
  • 202.0
  • 628.5
  • 3/4" Ply Frame
  • 369.0
  • 467.5
  • 149.5
  • 370.5
  • 3/4" CCX Pine
  • 145.0
  • 556.5
  • 104.0
  • 293.5
  • 25mm Baltic Birch
  • 700.5
  • 929.0
  • 627.0
  • 1015.5
  • 18mm Baltic Birch
  • 338.4
  • 703.5
  • 312.5
  • 708.0
  • 15mm Baltic Birch
  • 230.0
  • 686.3
  • 224.5
  • 563.5
  • 12mm Baltic Birch
  • 163.0
  • 465.5
  • 163.0
  • 516.2
  • 1/2" Ply Frame
  • 133.0
  • 247.5
  • 69.0
  • 308.5
  • 1" Ply Frame (Poplar/Gum)
  • 552.0
  • 949.0
  • 251.0
  • 464.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 7/8" Ply Frame
  • 433.0
  • 660.0
  • 280.0
  • 518.0
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 7/8" CCX Pine
  • 369.5
  • 508.5
  • 202.0
  • 628.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 3/4" Ply Frame
  • 369.0
  • 467.5
  • 149.5
  • 370.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 3/4" CCX Pine
  • 145.0
  • 556.5
  • 104.0
  • 293.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 25mm Baltic Birch
  • 700.5
  • 929.0
  • 627.0
  • 1015.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 18mm Baltic Birch
  • 338.4
  • 703.5
  • 312.5
  • 708.0
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 15mm Baltic Birch
  • 230.0
  • 686.3
  • 224.5
  • 563.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 12mm Baltic Birch
  • 163.0
  • 465.5
  • 163.0
  • 516.2
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 1/2" Ply Frame
  • 133.0
  • 247.5
  • 69.0
  • 308.5
  • Material
  • With Grain
  • With Gain 2" Wide
  • Cross Grain
  • Cross Grain 2" Wide
  • 1" Ply Frame (Poplar/Gum)
  • 552.0
  • 949.0
  • 251.0
  • 464.5